Demountable rim



June 26, 1.923. 1,4627@ J. E. RoEscH DEMOUNTABLE RIM Filed Feb. 21 1922 A5110??? el?.

Patented tlluneh, ldii,

JSEPJEI B. RGSCH, 0F 'OLD FORGE, PENNSYLVNEA.

Application filed February 21, 1922.

To all 107mm t may concer/rt:

Be it known that l, Josnrn B. Bonson,

a citizen of the United States ot America, residing at 01d Forge, in the county oi Lackawanna and State of Pennsylvania, have invented certain new and useful lmprovements in Demountable lttims; and l do hereby declare that the following is a full, clear, concise, and enact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

llhis invention relates to improvements in demountable'wheel rims, having for an object to provide a demountable rim employing a novel form of clampingvor receiving ring whereby the beaded or heel portions ot a pneumatic tire tube will be snugly and positively engaged and held upon the wheel` rim against undue movement or displacement.

lt is likewise an object oit the invention to provide a rini with means tor locking the shoe clamping iiange or ring with engagement with the demountable rim, the same being of such construction as will permit its arrangement upon the rim in but a minimum amount of time and with the least possible eort upon part of a user and likewise, being readily and easily removed from the rim when changing tire tubes or the like.

@ther objects will be in part obvious and in part pointed out hereinafter.

lin order that the invention and its mode of operation may be readily understood by persons skilled in the art, ll have in the accompanying illustrative drawings and in the detailed 'following description based thereon, set out one possible embodiment 'of the same:

ln these drawings: s

Figure 1 is a side elevation of the improved demountable rim;

Figure 2 is a vertical longitudinal section through the demountable rim, a segment or portion of th n locking ring being shown in open position in dotted lines;

Figure 3 is a vertical transverse section through the improved demountable rim.

Having more particular reference to the drawings, in connection with which like charanters of reference will designate corre-v spending parts throughout. theinvention may be stated to comprehend a demountable rim 1 having a marginal ange 2 formed upon one side thereof adording* means for Serial fdo. mut?.

engaging one side or heel ot a pneumatic tire shoe such as shown in the drawings and indicated by the numeral 3, the opposite side portion of the demountable rim having a peripherally disposed channel or way etv formed in the same in proximity to said opposite marginal portion and also having openings 5 formed therein in Vsubstantially diametrical relation, the purpose ed which will be hereinafter described.

ipertured ears or lugs generally indicated by the numeral 6 are arranged upon the inner sides of the demountable rim i, as clearl show-n in the Figures l and d and l0 as will 'e understood, serve as means for connecting bolts. or similar fastening de-` vices whereby the demountable rim may be immovably secured in position upon an 'automobile wheel or the like, v

lin order that the pneumatic tire shoe 3 may be secured to the demountable rim a clamping ring 7 is provided and as will be noted, has the inner side thereof channeled or formed to snugly engage the adjacent beaded or heel portion or said shoe 3, while the out/er side thereof is under out as at 8 whereby proper engagement ot the locking ring, hereinafter morel fully described, may be had therewith. l

lWith the clamping ring 7 in osition son the demountable rim l, it will e noted tat the pneumatic tire shoe 3 will be positioned in the manner as shown in the Figure t, they v bead or heel upon the tar side ot the shoe engaging in the ilange or heel engaging means 2, while the remaining heel ot the shoe is engaged in the inner side `ot the clamping ring 7.

'llo lock said clamping ring 7 against out- @5' 'ward displacement or laterall movement from the demountable rim, a locking ring `is provided and comprises segments 9 and 10, certain of the einde of which are hingedly interconnected as at l1, while inwardly disposed ngers 12 are formed upon the opposite or remaining ends thereof and as will be noted upon reference to the'Figure 2, are adapted tube arranged in abutting i relationship, whereby the same may be snug- 105 ly engaged in that particular opening 5 formed in the bottom of the channel 4 adjacent the same. :ln hingedly interconnecting the segments 9 and l() of the locking v rin at 11, ll may and preferably do arrange M0 suc connection eccentric to the medial frame thereof and as will be understood, by

placing the ring in the channel 4 formed in s the demountable rim 1 and engaging first the section 9 therein, the shorter or remaining section 10 when swung to its closed positlon as,shown in full lines in Figure 2 will'have that particular end thereof carryin the finger 12 placed under a tension sufficlent to cause said finger to snap into engagement withthe opening 5 upon inward movement or compression of the same in that direction.

When thelingers 12 of the lockingring sections 9 and 10 have been engaged in one of the openings 5 in the bottom of the 'channel 4 in the demountable rim 1, it will he understood that said ring will have been snugly fitted in the channel 4 throughout its circumference and in consequence, that lateral displacement of the ring with relation to the demountable rim Will be prevented. Therefore, since lateral movement of the locking ring with relation to the demountable'rim 1 will be prevented, it follows in consequence, that inasmuch as said locking ring is engaged with the under cut outer side 8 of the clamping ring 7, such clamping ring will be firmly held in engagement` with that particular heel portion of' the pneumatic tire shoe adjacentthey same and accordingly, that the tire shoe will be positively secured inits position upon the demountable rim 1.

Removal of the tire shoe 3 may be quickly effected by first engaging a screw driver or similar implement under the free end of one of the segments of the locking ring, preferably under the free end portion of the segment 10 and then forcing saidfree end upwardly wherebyto remove its finger 12 from the opening 5. At this time, the release segment of the ring may be readily swung downwardly as shown in dotted lines in the Figure 2, whereupon the remaining v segment, which as will be recalled is shorter than the segment 10 may be readily removed from its particular portion of the channel 4 and the vfinger 12 upon the free end thereof disengaged from the lopening 5.. To facilitate the removal of the free end of the se ment 10 from the channel 4I may Vand pre erably do form recesses or pockets 13 in those side portions of the demountable rim 1 in proximity to the several openings 5 formed i-n the bottoms of the annular channel4. Thus, in this way, the reduced end of a screw driver or similar instrument may be readily engaged under the free portion of the segment of the locking ring to be initially disengaged from the demountable rim.

With the locking ring removed from the annular channel 4 in the demountable rim 1, the clamping ring 7 may be moved laterally from said rim, disengaging the adjacent heel portion of the pneumatic tire shoe '3 and by consequence, permitting ready lattherein adjacent its opposite side, a clampingy ring receivable over that portion of the rim having the channel therein engageable with the opposite side of the tire shoe and having an undercut side, a locking ring having an interior diameter the same as the exterior diameter of the bottom of the channel of said rim and receivable within said channel, said locking ring composed of two eccentrically pivoted segments, said segments being formed of spring materialand having inwardly disposed fingers 'formed upon the free extremities thereof, the bottom of the -channel of said rim having an opening therein whereby one segment of said locking ring mayl be placed within said channel andthe other or longer segment of the locking ring may be snapped within said channel when the fingers of said segments are arranged in abutting relation and forced within said opening and the undercut side of said clampin ring beinrr adapted to engage over the loc ing ring.

In witness whereof I have hereunto set m hand'. y JOSEPH B. ROESCH. 

